Earphone



FIG. 1 is a front elevation view of an earphone showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines depict environment that forms no part of the claimed design. 

CLAIM The ornamental design for an earphone, as shown and described. 